Crews had knocked down 9 of those fires detected after about 250 lightning strikes peppered the region.

But the Reuben Fire stood at 5 acres as of about 11 a.m. The fire is burning 5 miles north of the Grave Creek Bridge and the Rogue River Trail, as the crow flies.

"There are over 30 firefighters on the ground and several aircraft making progress on the Reuben Fire," the Department of Forestry said in a statement. "In the air, three Type 2 helicopters, two Type one helicopters, four SEATS (Single Engine Air Tankers) and one air attack platform are working the fire. One LAT (Large Air Tanker) is currently on-order."

Fire managers are concerned about additional fires popping up throughout the day - and a fresh round of lightning in the forecast for Wednesday evening.

"We will be responding to additional smoke reports throughout today which will really stretch our initial attack resources thin across both counties if we continue to get additional fires popping up," the Department of Forestry said in a statement. "In addition, the weather forecast calls for lightning again tonight. We are really urging our community to stay vigilant and call 9-1-1 with smoke reports throughout the evening."